linux glx sdl

#include <GL/gl.h>
#include <GL/glx.h>
#include <X11/Xlib.h>
#include <stdio.h>

// 窗口大小
#define WIDTH 800
#define HEIGHT 600

int main() {
    Display *display = XOpenDisplay(NULL);
    if (!display) {
        printf("Cannot open display\n");
        return 1;
    }

    int screen = DefaultScreen(display);
    Window root = RootWindow(display, screen);

    // 创建OpenGL上下文
    GLXContext context = glXCreateContext(display, DefaultVisual(display, screen), NULL, GL_TRUE);
    if (!context) {
        printf("Cannot create OpenGL context\n");
        return 1;
    }

    glXMakeCurrent(display, root, context);

    // 渲染循环
    while (1) {
        glClear(GL_COLOR_BUFFER_BIT);

        glBegin(GL_TRIANGLES);
        glColor3f(1.0f, 0.0f, 0.0f); glVertex2f(-0.5f, -0.5f);
        glColor3f(0.0f, 1.0f, 0.0f); glVertex2f(0.5f, -0.5f);
        glColor3f(0.0f, 0.0f, 1.0f); glVertex2f(0.0f, 0.5f);
        glEnd();

        glXSwapBuffers(display, root);

        usleep(16000); // 控制帧率
    }

    glXMakeCurrent(display, None, NULL);
    glXDestroyContext(display, context);
    XCloseDisplay(display);

    return 0;
}